Glass-drawing apparatus.



BEST AVAIL EBL P. J. PAQUETL GLASS DRAWING APPARATUS.

APPUCATION FILED MAY 1, 1914.

1,144,234. Patented June 22, 1915.

STATES PATENT OFFICE.

. mamas aossriz racism, or snam, wssrvmemm.

' GLASSJ-DRAWING APPARATUS.

T all whom it may concern:

QUET, a citizen of the United States, and residing at Salem, in thecount of Harrison and bta'te of West Virginia, ave invented certain newand useful Im rovements in Glass-Drawing Apparatus, which the followingis a siecification.

This inventlon relates to certain new and useful improvements in glassdrawing apparatus.

The primary object of this invention 1s to provide a means either inconnection with a drawing pot or a gatherin ring, whereby the furnaceheat may be ed into contact with the glass whenever desired.

It being necessary to soften the glass for the pur ose of drawing andfinishing a cylinder, t 0 present invention 18 designed to allow theentrance of the furnace heat directly upon the surface of the glass aswell as upon the cylinder at a point ad aeent the surface of the glasswhen the cylinder is being drawn and whereby the cylinder may be readilydrawn to a point or may be ended, the heat being deflected toward thesurface of the glass entirely around the cylinder. in performing thesefunctions, a vertically movable rin is designed for employment eitherwith t e top edge of the drawing pot or with the upper edge of a'gathering ring, when such ring is employed while in each instance, anupward movement .of the ring admits the furnace heat entirelycircumferentially thereof and directed downwardly u on the surface ofthe inclosed drawing g ass.

The invention therefore consists in the novel combination andarrangement of parts hereinafter described, illustrated in theaccompanyin drawings, and pointed out in the appen ed claims.

In the drawings forming a part of this application and wherein ikedesignating numerals refer to corresponding arts throughout the severalviews: Figure is a perspective view of an out-working furnace with thepresent invention and also showing the glass tank connecting portion.Fig. 2 is a central lon itudinal sectional view thereof partially bro enaway. Fig. 3 is a horizontal sectional view taken upon line 3-3 of Fig.2. Fig. 4 is a vertical sectional view showing the device employed inconnection with a gathering ring within a glass pot and SpeclflcationotLetters 'rmm. P te t d June 22, 1915 Application filed Kay 1, 1914.Serial No. 885,681.

showing a portion of a cylinder in the drawing operation, and, Fig. 5 isa horizontal sectional detail view of the engagement between thegathering ring and glass pot wall.

Referring more in detail to the drawings, the present heat controllingring is illustrated in Figs. 1, 2, and 3 employed in connection with anout-working furnace attached to the end of a glass tank 11 and wherebythe glass from the tank 12 enters the drawing pot 13 through the bottompassage 14. Converging burner nozzles 15 are provided in the combustionchamber 16 and whereby upon ignition, the combustion mixture entirelyfills the annular chamber 17 and thereby inclosing the drawing pot 13while an outlet ventlS is provided. A damper rin 19 is provided with adepending annular ange 20 having a beveled edge 21 seated within the topof the drawing pot l3 and upon the inwardly inclined edge 22 at the topof said 0t, and-whereby the combustion flame or eat is prevented fromentering the drawing pot while said ring is in its seated osition. Theperipheral groove 23 is provided around the ring 19 for the purpose ofen agement with an elevating means herein il ustrated as formed of anencircling ring 24 fitting the groove 23 and havingoppositely-projecting arms 25 terminatlng in cross handles 26 and thering 19 may be elevated off of its seat upon the drawing pot wheneverdesired and again reseated.

In Figs. 4 and 5 of the drawings, the application of the invention isillustrated in connection with that class of glass furnaces in whichgathering rings are employed which float upon the surface of the moltenglass. In these views, the furnace casing 27 is provided with the moltenglass to a height int icated by the dotted line 28, the furnace beingsubstantially of that form illustrated in my former Patent #1,000,54(' Agathering ring 29 is shown within the molten glass and provided withprojecting feet 30 having outward diverging faces 31 freely positionedwithin a vertical groove 32 in the inner face of the furnace casing andwhereby the gathering ring is positioned beneath the opening 33 in thecover plate 34, while the ring is free to move vertically upon anychange in the level of the molten glass. A damper rin 35 is ositioncdvertically movable throug l the p ate opening 33 and has a slantinbottom surface 36 adapted to seat upon tie inwardly converging upperface 37 of the athering ring. The damper ring is providec l with acircumferential groove 38 for engaging an elevating means 39 similar tothat illustrated in Fig. 1, and whereby the damper ring 35 may readilybe elevated above the gathering ring 29 and again deposited thereon atwill. In this form of furnace it is to be understood that the combnstible gases are inclosed in the surroundingchamber 40 which encirclesthe ring 35 and the upper portion of the gathering ring 29 above thesurface of the molten glass.

The operation of the damper ring in connection with both forms of glassdrawing apparatus is identical, in that by elevating the damper ring,the surrounding heating medium is allowed to enter and contact thesurface of the inclosed glass portion from which the cylinder is beingdrawn and the inwardly inclined annular edges of the members soseparated downwardly direct the flame or heat upon such glass surfaceand also upon the lower end of the glass cylinder. The lower portion ofa cylinder 41 is illustrated in Fig. 4; as being drawn from the glasswithin the gathering ring 29 through the damper ring 35 furnishing uponseparation an annular space between the thus separated faces 36 and 37,allowing an entrance of the heating flame from :the chamber -10 to apoint interiorly of the gathering ring and in contact withv the saidcylinder. The cylinder'and adjacent glass being thus raised intemperature and consequentl y softened, allows the said 0 linder end tobe molded or tapered and ished in the manner that may be desirable.

While the forms of the invention herein shown and described are what arebelieved to be preferable embodiments thereof, it is nevertheless to beunderstood that various forms and modifications may be resorted to face,projecting feet upon said rin havmg outwardly-diverging faces slidab ypositioned within said slot, the wider ends of said feet being movableinto and out of said dove-tailed slot, a perforated plate upon saidfurnace casing, a damper ring provided with a. depending flangeslidably-positioned through the perforation of said plate and alsohaving an inwardly-inclined lower face adapted for seating upon theupper face of said gathering ring, the said furnace casing provided withan annular heatingchamber surrounding the upper portion of saidgathering ring and the lower portion of said damper ring flange whensaid flange and gathering ring are in engagement with each other, andelevating means for said damper ring. 1

2. In combination with a glass furnace casing having a chamber adaptedfor holding molten glass, and said chamber having a; "ertical slot withinwardly-converging sides, a5gathering ring withinthe moltenglass'ofsaid chamber, outwardly-projecting eet upon said-ring andprovided with outwardly-flaring opposite faces adapted for slidingreception within the said slot and movable into and out of the slot, anda damper ring mounted upon said gathering ring.

In testimony whereof I afiix my signature in presence of two witnesses.

v PIERRE JOSEPH PAQUET. Witnesses: 7

Emma E. SHLRA, HOWARD W. FERRER.

